4v4o | pdb_00004v4o

Crystal Structure of the Chaperonin Complex Cpn60/Cpn10/(ADP)7 from Thermus Thermophilus

spinqualitylabelsall models 4v4o, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4v4o is a 42 chain structure with sequence from Thermus thermophilus. This structure supersedes the now removed PDB entries 1we3 and 1wf4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ADP, DMS, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [CH60_THET2] Prevents misfolding and promotes the refolding and proper assembly of unfolded polypeptides generated under stress conditions (By similarity).[HAMAP-Rule:MF_00600] [CH10_THET2] Binds to Cpn60 in the presence of Mg-ATP and suppresses the ATPase activity of the latter (By similarity). Publication Abstract from PubMed The chaperonins GroEL and GroES are essential mediators of protein folding. GroEL binds nonnative protein, ATP, and GroES, generating a ternary complex in which protein folding occurs within the cavity capped by GroES (cis-cavity). We determined the crystal structure of the native GroEL-GroES-ADP homolog from Thermus thermophilus, with substrate proteins in the cis-cavity, at 2.8 A resolution. Twenty-four in vivo substrate proteins within the cis-cavity were identified from the crystals. The structure around the cis-cavity, which encapsulates substrate proteins, shows significant differences from that observed for the substrate-free Escherichia coli GroEL-GroES complex. The apical domain around the cis-cavity of the Thermus GroEL-GroES complex exhibits a large deviation from the 7-fold symmetry. As a result, the GroEL-GroES interface differs considerably from the previously reported E. coli GroEL-GroES complex, including a previously unknown contact between GroEL and GroES. Crystal structure of the native chaperonin complex from Thermus thermophilus revealed unexpected asymmetry at the cis-cavity.,Shimamura T, Koike-Takeshita A, Yokoyama K, Masui R, Murai N, Yoshida M, Taguchi H, Iwata S Structure. 2004 Aug;12(8):1471-80. PMID:15296740 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Chaperonin 3D structures Heat Shock Proteins

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